He incisal ridge of the permanent mandibular central incisors is usually at ____degrees to the labiolingual axis of the crown

1 answer:

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He incisal ridge of the permanent mandibular central incisors is usually at bisecting degrees to the labiolingual axis of the crown

Permanent mandibular central incisor:The crown dimensions are the smallest of any tooth, it has bilaterally symmetrical crown, and the line angles are the sharpest of any tooth.It shows the shallowest labial developmental grooves, smoothest lingual surface contour and the least developed cingulum.

Maxillary central incisor:The general shape is similar to maxillary central incisor except that they are shorter and narrower. It has the most cervically located contact area of any incisor. The mesioincisal and distoincisal angles are more rounded than the corresponding angles of maxillary central incisor.

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